The roots of modern Internet-oriented fantasy sports can be dated back 25 years to Rotisserie League Baseball.

It is famed that Daniel Okrent- a now well-renowned sportswriter- invented the rules to Rotisserie baseball on the back of a cocktail napkin on a long cross-country flight.

The Internet boom of the lat 1990’s created a revolution in the game. Enabling gamers to easily compute stats and monitor their teams brought Rotisserie baseball into the fantasy sports industry that we know today.

Source:
-http://iml.jou.ufl.edu/projects/spring06/Antonio/historyoffantasy.html